APA-Zitierstil (7. Ausg.)

Gannon, M. (1990). Operation drumbeat: The dramatic true story of Germany's first U-boat attacks along the American coast in World War II (1. ed.). Harper & Row.

Chicago-Zitierstil (17. Ausg.)

Gannon, Michael. Operation Drumbeat: The Dramatic True Story of Germany's First U-boat Attacks Along the American Coast in World War II. 1. ed. New York, NY u.a: Harper & Row, 1990.

MLA-Zitierstil (9. Ausg.)

Gannon, Michael. Operation Drumbeat: The Dramatic True Story of Germany's First U-boat Attacks Along the American Coast in World War II. 1. ed. Harper & Row, 1990.